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Balkan Bulgarian Airlines Flight 307

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Balkan Bulgarian Airlines Flight 307
LZ-BEM IL-18 Bulair TIP 07FEB69 (6939207653).jpg
LZ-BEM, the accident aircraft
Accident
Date3 March 1973
SummaryAtmospheric icing
Site
Aircraft
Aircraft type Ilyushin Il-18
Operator Balkan Bulgarian Airlines
Registration LZ-BEM
Flight origin Sofia-Vrazhdebna Airport, Sofia, Bulgaria
Destination Sheremetyevo International Airport, Moscow, Soviet Union
Passengers17
Crew8
Fatalities25
Survivors0

Balkan Bulgarian Airlines Flight 307 was a scheduled international passenger flight from Sofia to Moscow that crashed on its final approach to the Sheremetyevo Airport in Moscow on March 3, 1973. All 25 passengers and crew on board were killed in the crash.

Contents

Aircraft

The aircraft involved was an Ilyushin Il-18V with the registration LZ-BEM. It first flew in 1962.

Accident

Flight 307 took off from Sofia-Vrazhdebna Airport at 6:13 GMT with seventeen passengers and eight crew members on board. [nb 1] The passengers included eight Bulgarians, six Soviets, one Vietnamese, one Japanese, and one Cuban. [2]

At the time the instrument landing system at Sheremetyevo International Airport was not working. [3] The crew made contact with the Sheremetyevo controller at 12:27:53 local time and was cleared for a straight-in approach to Runway 07, however a missed approach was carried out. The aircraft carried out a second approach, but while descending along the glide path, the Il-18 lost altitude, went into a nosedive, and crashed at 12:45:50 local time (9:45:50 GMT). The aircraft struck the ground 4,330 m (14,210 ft) from the runway threshold. All occupants on board were killed in the accident.

Cause

The investigation conducted by the Ministry of Civil Aviation determined the probable cause to be a combination of the factors: icing of the stabilizer, a pitch maneuver to correct a deviation from the glide path, and extension of the flaps which prevented a recovery from the nosedive. The de-icing system was destroyed and could not be inspected. [4]

Notes

  1. ↑ It was also reported at the time that there were eighteen passengers and a crew of seven on board. [1] : 81 

References

  1. ↑
    • "Air safety (page 80)". Flight International . 105 (3384). 17 January 1974. Archived from the original on 26 July 2014.
    • "Air safety (page 81)". Flight International. Archived from the original on 26 July 2014.
    • "Air safety (page 82)". Flight International. Archived from the original on 26 July 2014.
    • "Air safety (page 83)". Flight International. Archived from the original on 26 July 2014.
  2. ↑ "Bulgarian Plane Crashes Near Moscow Airport". Jacksonville Daily Journal . United Press International. 4 March 1973. Retrieved 14 February 2026.
  3. ↑ "Bulgarian airliner crashes in Russia". The Post-Crescent . Associated Press. 3 March 1973. Retrieved 14 February 2026.
  4. ↑ "Balkan-Bulgarian Airlines, IL-18, LZ-BEM, accident at Moskva/Sheremetievo, USSR, on 3 March 1973. Report not dated, released by the Deputy Minister of Civil Aviation of the USSR" (PDF). Aircraft Accident Digest ICAO Circular 132-AN/93 (21). Montreal: International Civil Aviation Organization: 63–67. 1977.
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